From 3765aa3cb9f791d6da0c5fddc880c370460158d6 Mon Sep 17 00:00:00 2001
From: Jon TURNEY <jon.turney@dronecode.org.uk>
Date: Sat, 10 May 2014 10:59:39 +0100
Subject: Massage server fbconfigs to make them more likely to match swrast's
 fbconfigs

- Ignore server performance caveats (doesn't make a great deal of sense to match
those)
- Ignore server aux buf count (swrast doesn't provide any, but the server may
provide them for all fbconfigs)
---
 src/glx/dri_common.c |  3 +++
 src/glx/drisw_glx.c  | 27 +++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/glx/dri_common.c b/src/glx/dri_common.c
index 8bf47054a3..dd784502fa 100644
--- a/src/glx/dri_common.c
+++ b/src/glx/dri_common.c
@@ -294,6 +294,9 @@ driConfigEqual(const __DRIcoreExtension *core,
          break;
 
       case __DRI_ATTRIB_CONFIG_CAVEAT:
+         if (config->visualRating == GLX_DONT_CARE)
+            break;
+
          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
             glxValue = GLX_NON_CONFORMANT_CONFIG;
          else if (value & __DRI_ATTRIB_SLOW_BIT)
diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index fcb5d8f578..ddfdcd4986 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -730,6 +730,33 @@ driswCreateScreen(int screen, struct glx_display *priv)
    extensions = psc->core->getExtensions(psc->driScreen);
    driswBindExtensions(psc, extensions);
 
+   /* XXX: is this no good for upstream as it would change the fbconfigs seen
+      by DRI2/3, it should work on a copy of the fbconfigs instead ??? */
+   for (struct glx_config *m = psc->base.configs; m; m = m->next) {
+      /* We will ignore any server performance caveats, since they don't
+         affect swrast performance */
+      m->visualRating = GLX_DONT_CARE;
+
+      /* swrast doesn't provide any aux buffers, but XWin may (with some
+         drivers) provide them for all configs, so set the number to zero.
+
+         This could potentially create duplicate fbconfigs, but that isn't
+         forbidden. */
+      m->numAuxBuffers = 0;
+   }
+
+   for (struct glx_config *m = psc->base.visuals; m; m = m->next) {
+      m->visualRating = GLX_DONT_CARE;
+      m->numAuxBuffers = 0;
+   }
+
+   for (struct glx_config *m = psc->base.configs; m; m = m->next) {
+
+   }
+   for (struct glx_config *m = psc->base.visuals; m; m = m->next) {
+
+   }
+
    configs = driConvertConfigs(psc->core, psc->base.configs, driver_configs);
    visuals = driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
 
-- 
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